摘要
以色季拉国家森林公园的总体规划图为基础,利用Arc GIS10.6、Fragstats4.2、SPSS等软件,结合景观生态学原理、相关系数分析法等知识,对色季拉国家森林公园进行景观分类以及景观指数计算,并对各景观指数之间进行相关性分析来分析色季拉国家森林公园的景观格局特征。结果表明:草地斑块数量最多,斑块面积最大,占景观总面积33.62%,边缘密度和景观形状指数也最大,分别为7.02和20.39;最大斑块指数和斑块平均面积属有林地最高,指数分别为30.093%和10801.74 hm^(2);整体性指数和聚集度也属有林地最高,均在98以上。景观尺度上蔓延度指数、香浓均匀度指数、香浓多样性指数分别为63.14、0.69、1.52。景观格局指数间的相关性较大。综上所述研究区内以草地、有林地、疏林地和裸岩石质地为主要基质,各斑块类型分布均匀且较为集中,破碎化程度较低,受人为干扰相对较少,景观结构基本合理,森林生态系统处于相对稳定状态。
On the basis of the master plan of Sejila National Forest Park,using ArcGIS 10.6,Fragstats 4.2,SPSS and other software,combined with the principles of landscape ecology,correlation coefficient analysis and other knowledge,the landscape classification and landscape index calculation of Sejila National Forest Park were carried out,and the correlation analysis among the landscape indexes was conducted to analyze its landscape pattern characteristics.The results showed that the number and area of grassland patches were the largest,accounting for 33.62%of the total landscape area,and the edge density and landscape shape index were also the largest,which were 7.02 and 20.39 respectively;the maximum patch index and average patch area were the highest in forested land,with indexes of 30.093%and 10801.74 hm^(2)respectively;the overall index and aggregation degree were also the highest in forested land,both above 98.On the landscape scale,the spreading index,evenness index and diversity index were 63.14,0.69 and 1.52 respectively.There was a great correlation between landscape pattern indexes.To sum up,grassland,woodland,sparse woodland and bare rock texture were the main matrix in the study area,and the patch types were evenly distributed and concentrated,with low fragmentation degree,relatively less human interference,reasonable landscape structure and relatively stable forest ecosystem.
作者
杨慧
郝文渊
王小姣
杨婵
李文博
YANG Hui;HAO Wenyuan;WANG Xiaojiao;YANG Chan;LI Wenbo(Key Laboratory of Ecology and Energy Saving Study of Dense Habitat,Ministry of Education;Tibet Joint Key Laboratory of Ecological Security;Tibet Human Settlement Research Center,Tibet Agricultural and Animal Husbandry University;Resources&Environment College,Tibet Agriculture&Animal Husbandry University;Res.Institute of Tibet Plateau Ecology,Tibet Agriculture&Animal Husbandry University,Nyingchi Tibet,860000,China)
出处
《高原农业》
2022年第5期447-453,共7页
Journal of Plateau Agriculture
基金
高密度人居环境生态与节能教育部重点实验室(20210111)
西藏生态安全联合重点实验室开放基金项目(STAQ-2021Y-9)
西藏人居环境教学团队项目。
关键词
景观指数
景观格局
色季拉国家森林公园
斑块
相关性分析
landscape index
landscape pattern
Sejila National Forest Park
plaque
correlation analysis
